Grinding and buffing wheel.



L. H. BRINKMAN. GRINDING AND BUFFING WHEEL. APPLICATION FILED 1513.20, 1911.

COLUMBIA PLANOGRAPH co.. WASHINGTON, n. C.

Patented Apr. 23, 1912.

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LOUIS H. BRINKMAN, OF GLEN RIDGE, NEW JERSEY, ASSIGNOR TO AMERICAN OIL & SUPPLY COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

GRINDING AND BUFFING WHEEL.

Specification of Letters Patent.

Patented Apr. 23, 1912.

Application filed February 20, 1911. Serial No. 609,546.

To all cull-m it may concern Be it known that I, LOUIS H. BRINKMAN,

a citizen of the United States, and a resident of Glen Ridge, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Grinding and Buffing Wheels, of which the following is a specification.

The invention relates to improvements in grinding and buffing wheels, and it consists in the novel features, structure, and combinations of parts hereinafter described, and particularly pointed out in the claims.

The object of my invention is to produce a grinding wheel of improved and highly efficient construction and one capable of ready manufacture.

In its preferred form the wheel of my invention comprises a peripheral or grinding section of individual transverse pieces of cloth of abrasive character, such as emery cloth, a wire band or rod on which said pieces are strung and which aids in retain ing them in form to create a circular peripheral section, hoops or rings of wood or the like set into recesses in the opposite sides of the inner portion of said peripheral sec tion and securely fastened therein by glue, and opposite removable hub-disks adapted to fit within opposite sides of said peripheral section and engage the outer or exposed side surfaces of said hoops, the inner edges of said pieces of abrasive material constituting the peripheral section being strongly glued together, and said disks being removable and creating a hub adapted to pass upon and be secured to a lathe-spindle or the like. The peripheral or grinding section of the wheel will, of course, become worn out after.

continued use, and when this happens the remaining part of said section will be removed from the disks and a new peripheral section applied to take its place.

One of the prime objects of my invention may be desired, but in either event said pieces are formed of cloth having abrasive substance over its entire surface, and hence when the pieces are placed face to face and closely pressed together into form to create the circular peripheral section of the wheel, the abrasive material extends from the outer to the inner edges of said section and uniformly throughout the entire section, and I have found this feature of the construction to be very beneficial in respect to the ciliciency of the wheel. The fact that the pieces comprising the peripheral section of the wheel are of abrasive cloth, enables the wheel to act efficiently as worn down and to maintain throughout its use a uniformity of action against the metals subjected to it, which is highly desirable. A further advantage due to the use of pieces of abrasive cloth in making up the peripheral section of the wheel, arises from the fact that during the use of the wheel it is not necessary to apply abrasive substances on its periphcry.

The invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, in which:

Figure 1 is a vertical section through a grinding wheel embodying my invention, and Fig. 2 is a side elevation, partly broken away, of the same.

In the drawings 10 designates the peripheral grinding section of the wheel, 11 a wire on which the leaves 12 of said section are strung, 13 wooden hoops or rings of reed set into side annular recesses let of said section and glued therein, and 15 metal side disks fitted into said recesses and embracing in annular grooves 16 therein, the outer sides of said hoops or rings. The side-disks 15 are formed at their centers with inwardly projected sleeve portions 17 which constitute a hub adapted to be slid upon a lathe-spindle 18 and clamped against the peripheral section 10 by means of a nut 19 and coacting abutment 20, which also secure the wheel in operative relation to the spindle so that the wheel may rotate therewith.

The peripheral section 10 is formed of transverse leaves 12 of flexible abrasive cloth, such as emery cloth, closely pressed together on a wire or rod 11 which is finally bent into ring form and has its two ends twisted or otherwise secured together, whereby the series of leaves become formed into a ring of leaves adapted to constitute the peripheral section of the wheel, which section, since the leaves are of abrasive cloth, will be a self-contained abrasive sec tion of uniform character from its outer to its inner edges and not require, as in many instances in the prior art, the repeated application of abrasive substance to its periphery during the use and wearing down of said section. The leaves 12 are all alike and each is perforated near its inner end to pass on the wire 11 and also recessed in the opposite side edges of its inner portion whereby in the section 10 are formed the annular side recesses 14. The rings or hoops 13 are preferably of wood, reed being used by me, and they closely fit within the inner portions of the recesses let and are glued therein. The rings 13 add very substantial. rigidity and stability to the section 10 and aid greatly in maintaining the series of leaves 12 in the circular outline desired for the section 10. In addition to securing the leaves 12 by the rod 11 and hoops or rings 13 I coat the surface presented by the inner ends of said leaves, as at 21, with glue, which aids in maintaining the stability of the section 10.

In Fig. l I illustrate the leaves 12 as formed of cloth having the abrasive substance only on one face thereof, this being the face which in the use of the wheel advances against the metal. It is obvious, however, that the leaves 12 may have emery or other abrasive substance on both faces thereof, it so desired.

The disks 15 correspond with each other and fit within the outer portions of the side recesses 1 1 in the peripheral section 10, and, as aforesaid, are formed with annular grooves 16 in their facing sides to closely pass upon and engage the outer sides of the hoops or rings 13, as clearly shown in Fig. 1. The fact that the outer edges of the disks 15 set into the recesses 14 aids very materially in maintaining the stability of the wheel as awhole. The annular grooves 16 in the site disks 15 by encompassing, as they do, nearly one-half of the rings or hoops 13, increase the durability and efficiency of the wheel.

In the construction presented by me I am enabled to successfully employ leaves 12 of adequate extent to create a reasonably flexible periphery in the section 10 and to use the wheel until the said section has worn down to nearly the edges of the disks 15.

What I claim as my invention and desire to secure by Letters Patent, is:

1. A wheel of the character described comprising a peripheral section composed of transverse flexible leaves of cloth having a face-coating of abrasive substance and said section having in the opposite sides of its inner portion annular recesses, removable side-disks fitted within said recesses and receiving and clamping the inner annular portion of said peripheral section between them, and additional means securing said leaves at their inner portion to create a firm peripheral section.

2. A wheel of the character described comprising a peripheral section composed of transverse flexible leaves of cloth having a face-coating of abrasive substance and said section having in the opposite sides of its inner portion annular recesses and in the opposite faces of said recessed portion additional annular recesses, hoops fastened to said section within said additional recesses and projecting laterally therefrom into the main side recesses, and removable side-disks titted within said main recesses and receiving and clamping between them the inner annular portion of said peripheral section, said side-disks having in their facing sides annular grooves fitting upon the laterally projecting portions of said hoops.

3. A wheel of the character described comprising a peripheral section composed of transverse flexible leaves of clot-h having a face-coating of abrasive substance and said section having in the opposite sides of its inner portion annular recesses and in the opposite faces of said recessed portion ad ditional annular recesses, hoops fastened to said section within said additional recesses and. projecting laterally therefrom into the main side recesses, removable side disks fitted within said main recesses and receiving and clamping between them the inner annular portion of said peripheral section and having in their facing sides annular grooves fitting upon the laterally projecting portions of said hoops, and a wire rod on which said leaves are threaded and which has its ends connected together to form a ring, the inner edge of said peripheral section of leaves having a coating of glue to aid in binding the leaves together.

Signed at Newark, in the county of Essex and State of New Jersey, this 31st day of January A. D. 1911.

LOUIS H. BRINKMAN.

Witnesses:

JOHN C. GRoEL, O. R. BENNETT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

